JP2512821Y2 - Wind fan in thresher - Google Patents

Description

TECHNICAL FIELD The present invention relates to a compressed air fan in a thresher that wind-selects an object to be treated after threshing with compressed air.

Conventional techniques Threshing machines such as combine harvesters and harvesters convey grain culms after mowing by a grain transport chain, and at the same time threshing is performed by a threshing unit that has a handling barrel, etc. The first spiral collects the first product by oscillating and wind-selecting the first product such as fine grains, the second product such as culm and branches attached particles, and the waste products such as long straw and straw chips. Is
The second product is returned to the sorting unit or the threshing unit via the second spiral body and reprocessed, and the dust is discharged to the outside of the machine by the suction fan. By the way, a compressed air fan is provided below the starting end side of the crimp net located above the first spiral body, and the air-selection action of the first product in the sorting section is generated by the compressed air fan and crimped. It is done by a sorting wind that penetrates the net.

Problems to be Solved by the Invention By the way, since the above-mentioned compressed air fan is arranged so as to blow a uniform air volume from the crimp net to the most flow plate, it is possible to sort on the crimp net with many objects to be sorted. However, there was a problem that impurities other than single particles such as scraps were often mixed in the first thing falling from the crimp net. There is also a problem that the paddy supplied to the first spiral body is repelled by the rotation of the spiral body and enters the discharge casing through the discharge port of the compressed air fan to cause the loss of the paddy.

An object of the present invention is to provide a compressed air fan in a thresher that can eliminate the above problems.

Means for Solving the Problems In order to achieve the object of the present invention, in the discharge casing of a compressed air fan which is located below the starting end side of the crimp net for sorting down the first item, and which selects the first item by wind. In addition to horizontally dividing the air passage into upper and lower parts, the upper and lower air passages of the air flow direction plate are set so that the upper and lower air passages are wider than the lower air passage. The gist is that only the discharge port of the lower air passage is covered with the net among the discharge ports of the air passage and the lower air passage.

The object to be threshed by the handling cylinder is oscillated / pressurized by the sorting unit into the first object, the second object and the dust, and the first object and the second object are respectively the first spiral body and the second spiral body. The dust collected by the spiral body is discharged to the outside of the machine by the suction fan. At this time, a horizontal wind vane is installed in the discharge casing of the compressed air fan installed below the start end side of the crimp net that sorts and sorts the first thing, and the air passage is divided into upper and lower parts so that the wind direction is the best with the crimp net. In addition to directing to the flow plate, the air volume directed to the crimp net is configured to be larger than the air volume directed to the most flow plate, so that the sorting on the crimp net is performed well and the crimp net is Single particles and debris that have fallen from are finely sorted on the flow plate, and light debris and the like are blown forward, so there is little mixing of impurities other than single particles in the first thing collected in the spiral.

Further, as described above, when the paddy is collected by the first spiral, even if the paddy is repelled by the rotation of the first spiral and scatters toward the discharge port of the discharge casing, the discharge of the lower air passage of the discharge casing is generated. Since the outlet is covered with a net, it is possible to prevent paddy from entering the suction fan and prevent paddy loss.

Embodiment An embodiment of the thresher of the present invention will be described with reference to the drawings.

In the figure, thresher A such as combine harvester
Conveys the culm after cutting with the feed chain 1,
The threshing section B consisting of the handling cylinder 2 and the processing cylinder 3 threshes, and the processed objects after threshing are sorted by the sorting section C, such as the best products (not shown) such as fine grain, and the cuttings and the branch adhering grains. Second item (not shown)
In addition, it is configured to sort into dusts (not shown) such as cullets and straw wastes and release them to the outside of the machine, respectively.

The sorting unit C is configured to perform sorting work of the first item, the second item, the dust, etc. while swinging and transporting the object to be processed with the grain culm transport direction of the feed chain 1 as the front-rear direction. . That is, a receiving net 2b is provided below the handling chamber 2a of the threshing section B, and the non-perforated corrugated plate 4a and the non-perforated corrugated plate 4a are located below the receiving net 2b and extend from the starting end of the handling drum 2 to the middle part of the processing drum 3. A chaff sheave 4 composed of adjustable crosspieces 4b is provided, a first compressed air fan T1 is provided below the non-perforated corrugated plate 4a, and a non-perforated corrugated plate 5a and below the transverse nodule 4b. A gren sieve 5 having crimp nets 5b arranged at the front and rear is provided.
A second compressed air fan T2 is provided below the start end side of 5b, and a first mouth 6 is provided below the crimp net 5b, and the first spiral 7 provided at the first mouth 6 collects the first product. , Second dust and dust are the compressed air from the second compressed air fan T2 and the first compressed air fan T1
Is blown to the stroll rack 8 adjacent to the leak net 5b of the gren sieve 5 by the compressed air from the streak rack 8, and the third compressed air fan T3 is provided below the straw rack 8.
The second product is wind-selected by the compressed air from, and is returned to the sorting section C through the second spiral body 9 for reprocessing, and the dust is a suction fan disposed in the lower front part in the grain culm transfer direction. It has a schematic structure in which it is released to the outside by the 10.

Reference numeral S is a rocking frame that supports the chaff sheave 4, the Glen sheave 5, and the Straw rack 8.

The first compressed air fan T1 blows air toward the receiving net 2b of the handling barrel 2 and the cross rail 4b of the chaff sheave 4 (see arrow A in FIG. 1).
However, it is configured to prevent clogging of the object to be processed on the receiving net 2b and to perform rough selection such as paddy, shaving and cutting on the horizontal rail 4b. Furthermore, the upper casing 11 of the first compressed air fan T1
Is formed integrally with the bottom plate 4c of the rocking frame S to provide the rocking frame S close to the first compressed air fan T1 so that the space can be effectively used and the wind pressure to the chaff sheave 4 can be improved. And the upper casing 11 of the first compressed air fan T1 also integrally swings with the swing of the chaff sheave 4, so that the sorting wind flowing along the upper casing 11 and the chaff sheave 4 are relatively opposed to each other. It is configured so that there is no unevenness in the sorting performance on the horizontal rail 4b without changing the positional relationship.

As shown in FIGS. 3 to 4, the second compressed air fan T2 is provided with a lateral airflow direction plate 13 in the discharge casing 12, and the lateral airflow direction plate 13 moves the airway up and down. And the upper and lower widths of the wind direction plate 13 at the wind-cutting starting point are larger than the width m on the lower air passage 14b side on the upper air passage 14a side.
Is set so that the air volume of the upper air passage 14a directed to the crimp net 5b is larger than the air volume of the lower air passage 14b directed to the most flow plate R, and moreover, in the lateral direction. The rigidity of the casing is enhanced by integrally connecting the left and right side plates of the discharge casing 12 via the wind direction plate 13. Further, even if the paddy repelled by the rotation of the first spiral body 7 tries to enter the discharge casing 12, the lower air passage 14b.
The discharge port is covered with a mesh 15 to prevent the paddy from entering the discharge casing 12 and prevent paddy loss. On the other hand, the discharge port of the upper air passage 14a is at a high position,
Less invasion of the paddy repelled by the first spiral body 7,
Further, if the net is covered with a net, the net becomes a resistance and the amount of air directed to the crimp net 5b is reduced. Therefore, the upper air passage 14a is not provided with a net at the discharge port.

By the way, the vertical width at the wind cutting start point of the lateral wind direction plate 13 provided in the discharge casing 12 of the second compressed air fan T2 is set such that the width l on the upper air passage 14a side is wider than the width m of the lower air passage 14b. In addition, by setting the vertical width at the wind-off end point of the wind direction plate 13 so that the lower air passage 14b is wider than the upper air passage 14a, the directivity to the crimp net 5b is further increased, and It is also possible to increase the air volume from the air passage 14a and at the same time increase the air pressure to further enhance the sorting effect on the crimp net 5b. Furthermore, the wind direction plate 13 may be variably provided, and when the grain culm is supplied in a large amount or the wet material is threshed, the air volume directed toward the crimp net 5b is large, and when the grain culm is supplied in a small amount, the crimp net 5b is supplied. It is possible to further enhance the selection effect by adjusting the amount of directed air flow to be small.

The shape of each of the above-mentioned compressed air fans T1, T2, T3 is not particularly limited, but as shown in FIG. Each driven air fan T1, T2, T3 through one belt 19 using T3 drive pulley with adjustable effective diameter split pulleys 16, 17, 18
By rotating the machines in the same direction, the space can be effectively utilized, and the fan speed can be adjusted according to the material conditions and the number of grains to be supplied. It can be carried out.

In the above configuration, the grain culms after cutting are threshed by the threshing unit B, and the objects to be treated such as the first one, the second one, and the waste are
After the rough selection by the wind pressure from the first compressed air fan T1 on the chaff sheaves 4, the wind is sorted by the compressed air from the second compressed air fan T2 on the crimp net 5b of the Glen sieve 5, and the first product is the first spiral. Recovered by 7. At this time, the second compressed air fa
Since the amount of air in the upper air passage 14a of T2 is large (the air pressure is large), sorting on the crimp net 5b is ensured, and the best product is the first one in the state where impurities other than single grains are less mixed. And falls. That is, the light debris, culm, etc. in the upper layer of the crimp net 5b are floated above the crimp net 5b by the pressure air from the upper air passage 14a while being oscillatingly transferred, and the debris that has floated is the first compressed air fan. Together with the sorting wind from T1, it is blown to the front of the sorting wind path, and almost only single particles leak from the crimp net 5b. Further, since the object to be treated that has fallen to the No. 1 mouth 6 is again carefully selected by the lower air passage 14b, the first object to be recovered by the first spiral body 7 is largely mixed with impurities such as scraps. The width is reduced. Then, the second product and the dust discharged by the second compressed air fan T2 are further selected by the compressed air of the third compressed air fan T3 on the straw rack 8 and the second product is the second spiral body. The dust is returned to the sorting section C via 9 and reprocessed, and the dust is discharged to the outside of the machine via the suction fan 10. In this way, the effective division of air is performed as a whole by the division of roles and cooperation of the three compressed air fans T1, T2, T3, so that the sorting performance is remarkably improved. Therefore, the sorting performance is not deteriorated even when the efficiency is high (when a large amount of grain culm is supplied) or when the wet material is threshed, and the sorting performance is maintained well.

Also, when the first spiral body 7 collects the first thing, the rotation of the first spiral body 7 causes repulsion of the paddy, but since the net body 15 is provided at the discharge port of the lower air passage 14b, it is repulsed. The paddy does not enter the discharge port of the lower air passage 14b, and the grain loss can be prevented. On the other hand, by not providing the net body 15 at the discharge port of the upper passage 14a for blowing air to the crimp net 5b, it is possible to prevent a decrease in the air volume due to resistance and maintain good wind selection performance in the crimp net 5b. be able to.

Effect of the Invention As described above, according to the present invention, a lateral airflow direction plate is provided in the discharge casing of the compressed air fan for selecting the best product to divide the air passage into upper and lower parts, and at the start point of the wind direction of the airflow direction plate. By setting the upper and lower widths so that the upper air passage is wider than the lower air passage, the air volume in the upper air passage that is directed toward the crimp net with many objects to be sorted becomes the most flow plate with few objects to be sorted. It is possible to increase the amount of airflow in the lower wind passage to improve the sorting effect on the crimp net, and at the same time, the sorting wind in the lower air passage drops the paddy, straw from the crimp net to the top of the flow plate. It is possible to sort scraps and the like, and it becomes possible to further improve the sorting performance by sharing the role of the sorting wind. Further, since the discharge port of the lower air passage is configured to be covered with the net body, when the paddy is collected by the first spiral, the paddy repelled by the rotation of the first spiral body discharges the lower air passage. Even if scattered toward the outlet, it is possible to prevent the paddy from entering the discharge casing and prevent paddy loss. On the other hand, by not providing a net at the discharge port of the upper passage that blows air to the crimp net, it is possible to prevent the selection air volume that penetrates the crimp net from decreasing and maintain good wind selection performance in the crimp net. You can

[Brief description of drawings]

The drawings show an embodiment of a compressed air fan according to the present invention.
The figure is a side view showing the whole structure of the thresher, Fig. 2 is a plan view of the thresher, Fig. 3 is an enlarged side view of an essential part of the present invention, and Fig. 4 is an enlarged part of the present invention. FIG. 5 is a plan view of a thresher showing an example of a compressed air fan. A: Threshing machine, 5: Glen sieve, T1: First compressed air fan, T2: Second compressed air fan, T3: Third compressed air fan,
12 …… Discharge casing, 13 …… Wind vane, 14a …… Upper air duct, 14b …… Lower air duct, l …… Upper air duct width, m ……
Width on the lower wind path side.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takao Omura Inventor Takashi Omura, Izumo-cho, Yazuka-gun, Shimane Prefecture, 667 Izaya-cho, 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Yoichi Yamane Ozumo, Izumo-cho, Yatsune-gun, Shimane Prefecture 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Noboru Ito, Izumo-cho, Yatsuka-gun, Shimane Pref. Iyacho, 667 1 Mitsubishi Agricultural Machinery Co., Ltd. Examiner Mitsunari Takahashi (56) References JP 61-111622 (JP, A) Actually opened 62-169940 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A lateral air flow direction plate is provided in a discharge casing of a compressed air fan located below a start end side of a crimp net for sorting and selecting the first item to wind up and down an air passage. In addition to dividing, the upper and lower widths at the wind cutting start point of the wind direction plate are set so that the upper air passage is wider than the lower air passage, and the upper and lower air passages of the discharge casing are provided with a lower outlet and a lower outlet. A compressed air fan for a threshing machine, characterized in that only a discharge port of the side air passage is covered with a net.